Laboratory Apparatus Heating and Mass Measurement

Try these questions

5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.

1. 1. Which part of a Bunsen burner is turned to change the amount of air entering the barrel?

   • A. The jet
   • B. The base
   • C. The collar
   • D. The gas tap

2. 2. A Bunsen burner is lit with the air hole fully closed. Which statement describes the flame produced?

   • A. A steady blue flame with no soot, because combustion is complete
   • B. A yellow flame that leaves soot on glassware, because combustion is incomplete
   • C. A blue flame that is the hottest type, because there is plenty of oxygen
   • D. A flame that produces no light, because no fuel is burning

3. 3. A stone has a mass of 200 g and displaces 80 cm^3 of water in a measuring cylinder. Calculate the density of the stone.

   Type your answer (in g/cm^3) in the lesson.

4. 4. What is the name of the button on a digital balance that sets the reading to zero after an empty container is placed on the pan?

   Type your answer in the lesson.

5. 5. Why should a hot crucible never be placed on a balance pan?

   • A. It makes the pan wet and rusty
   • B. It causes rising warm air currents that give unsteady mass readings and may damage the sensors
   • C. It turns the beam balance into a spring balance
   • D. It makes the object's true mass permanently increase

More in Introduction to Integrated Science

• ▸Laboratory Hazards and Safety Symbols
• ▸Laboratory Accidents and First Aid Measures
• ▸Basic Science Skills and SI Units
• ▸Derived SI Quantities
• ▸Optical Instruments and Volumetric Glassware
• ▸Classification of Mixtures and Purity Determination
• ▸Physical Separation Techniques for Mixtures
• ▸Community Service Learning Water Purification Project

See every Grade 7 Integrated Science lesson →